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MM440 Rating Issue

Created by: qayyum faiz at: 1/2/2017 11:32 AM (5 Replies)

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1/2/2017 11:32 AM	Rate (0)
qayyum faiz Experienced Member Joined: 7/30/2012 Last visit: 1/16/2025 Posts: 127 Rating: (0)	Dear All, i have a confusion regarding the MLFB of the drive i orderd a drive for 15KW motor and the part number is 6SE6440-2AD31-1CA1 if you check the datasheet of this drive it states the below listed text... MICROMASTER 440 WITH BUILT-IN CLASS A FILTER 3AC 380-480 V +10/-10% 47-63 HZ CONSTANT TORQUE POWER 11 KW OVERLOAD 150% 60 S, 200% 3 S SQUARED TORQUE POWER 15 KW 245 X 185 X 195 (H X W X D) PROTECTION IP20 AMBIENT TEMP. -10 TO +50 DEG. C WITHOUT AOP/BOP My confusion is that is this drive designed for 11KW motor or 15KW?? can i use this drive on my 15KW motor?? also what does (LO) and (HO) means that is mentioned in rated power as per datasheet
	Last edited by: qayyum faiz at: 1/2/2017 11:34:44 AM
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1/2/2017 1:01 PM	Rate (0)
MichalWZ Silver Member Joined: 3/31/2015 Last visit: 11/13/2025 Posts: 175 Rating: (16)	Would be lovely if you've just read the manual, catalog or anything. LO (Low Overload) = VT (variable torque) It means it can provide up to 110% of rated current for 60s in 300s cycle and 140% rated current for 3s every 300s Pumps and fans basically HO (High Overload)= CT (constant torque) It means it can provide up to 150% of rated current for 60s in 300s cycle and 200% output current for 3s every 300s (For A to F frame sizes). What's your application?
	Last edited by: m_zlotek at: 1/2/2017 1:02:29 PM Last edited by: m_zlotek at: 1/2/2017 1:02:40 PM Last edited by: m_zlotek at: 1/2/2017 1:03:17 PM
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1/2/2017 1:47 PM	Rate (0)
qayyum faiz Experienced Member Joined: 7/30/2012 Last visit: 1/16/2025 Posts: 127 Rating: (0)	MY APPLICATION IS A FAN MOTOR..

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1/2/2017 2:45 PM	Rate (0)
MichalWZ Silver Member Joined: 3/31/2015 Last visit: 11/13/2025 Posts: 175 Rating: (16)	Then you'll be fine with 6SE6440-2AD31-1CA1, but why not go with V20 in this case? Or G120C if you need communication
	Last edited by: m_zlotek at: 1/2/2017 2:46:05 PM
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1/2/2017 3:20 PM	Rate (0)
qayyum faiz Experienced Member Joined: 7/30/2012 Last visit: 1/16/2025 Posts: 127 Rating: (0)	means i don't have to change my drive for this application the one that i have that is 6SE6440-2AD31-1CA1 will do fine right??

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1/3/2017 7:20 AM	Rate (0)
MichalWZ Silver Member Joined: 3/31/2015 Last visit: 11/13/2025 Posts: 175 Rating: (16)	Yes, as I said low overload is ok for fans

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